Hydrogen, as a clean and sustainable energy carrier, plays a vital role in the global transition towards renewable energy and combating climate change. Proton Exchange Membrane (PEM) technology in electrolyzers is a key component in efficiently producing hydrogen while being environmentally conscious. PEM electrolysis involves splitting water molecules into hydrogen and oxygen gases through an electrochemical process, with the PEM acting as a selective membrane allowing only protons to pass through. The critical components of PEM electrolysis include the membrane, electrodes, and catalysts, which work together to facilitate the separation of hydrogen and oxygen gases. Optimal operating conditions, such as temperature and pressure, are essential for maximizing efficiency, along with factors like current density, membrane conductivity, catalyst activity, and system design. PEM hydrogen generation finds applications in clean energy production, serving as a feedstock for hydrogen fuel cells in various sectors like transportation and stationary power systems. It also contributes to energy storage solutions by converting surplus renewable energy into hydrogen for later conversion back to electricity. In industrial and commercial use, PEM electrolysis is crucial for establishing hydrogen refueling infrastructure and supporting sectors like ammonia production, chemical synthesis, and metal processing. The technology offers environmental advantages by reducing carbon emissions and is becoming increasingly cost-competitive through advancements and economies of scale. However, challenges remain in scaling up PEM hydrogen generation for large-scale deployment, including addressing cost barriers, infrastructure development, and market acceptance. Industry trends focus on modular systems, integrated energy solutions, and material advancements to enhance efficiency and drive broader adoption. Research and development efforts aim to further improve PEM hydrogen generation efficiency, durability, and cost-effectiveness through collaboration between industry, academia, and government agencies. The article concludes by emphasizing the importance of PEM electrolysis in advancing clean hydrogen production and encourages continued investment, innovation, and collaboration to realize its full potential in driving a cleaner, greener world.